Isolation of a Pyridinium Alkoxy Ion Bridged Dimeric Zinc Complex for the Coupling Reactions of CO2 and Epoxides

✍ Scribed by Hoon Sik Kim; Jai Jun Kim; Byung Gwon Lee; Ok Sang Jung; Ho Gyeom Jang; Sang Ook Kang

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 91 KB
• Volume: 112
• Category: Article
• ISSN: 0044-8249
• DOI: 10.1002/1521-3757(20001117)112:22<4262::aid-ange4262>3.0.co;2-z

✦ Synopsis

62 (t, 3 J(H,H) 6.6 Hz, 1 H; C 5 H 5 N), 8.97 (d, 3 J(H,H) 6.6 Hz, 2 H; C 5 H 5 N).

Catalysis reaction: All the coupling reactions were conducted in a 100-mL stainless-steel bomb equipped with a magnet bar and an electrical heater. The reactor was charged with the appropriate catalyst and epoxide, and pressurized with CO 2 (% 1.4 MPa). The bomb was then heated to a specified temperature with the addition of CO 2 (up to 3.4 MPa) from a reservoir tank to maintain a specified pressure. After the reaction, the bomb was cooled to room temperature and the remaining epoxide was removed. The product mixtures were analyzed by GC, HPLC, and GC-MS. Solid catalyst mixtures were characterized by NMR spectroscopy.